Quadrangle Development Corporation and Hartford Insurance Company dispute insurance coverage for damages arising out of a business interruption at a Hartford insured property, the Washington Grand Hyatt Hotel. 1 On August 20, 1989, extensive damage to one of the hotel’s switchboards necessitated the suspension of electric power to the hotel for twelve hours in order that repairs could be made. After a trial without jury, the trial court concluded that Hartford was not liable under the terms of the policy for this interruption because the damage was proximately caused by electric arcing, a specifically excluded cause of loss.
Quadrangle makes essentially two arguments on appeal: (1) that the trial court applied an erroneous definition of “fire” in concluding that Quadrangle failed to show that the damage was caused by fire (recovery for damage caused by fire is allowed under
This case was tried without a jury and, therefore, on review we will set aside the trial court’s judgment only “for errors of law unless it appears that the judgment is plainly wrong or without evidence to support it.” D.C.Code § 17-305(a) (1989);
see Burns v. Hanover Ins. Co.,
I.
The insurance contract at issue here includes a section titled “Causes of Loss— Special Form.” Therein, a number of exclusions from the insurance company’s coverage are set forth. Section B.2. states in pertinent part:
We will not pay for loss or damage caused by or resulting from any of the following: a. Artificially generated electric current, including electric arcing, that disturbs electrical devices, appliances or wires.
“But if loss or damage by fire results, we will pay for that resulting loss or damage.” (Emphasis added.)
Quadrangle presented expert testimony to the effect that, within the insurance business, fire is uniformly defined as combustion with a flame or glow. Arguing that the electric arcing on the switchboard produced fire in the form of combustion with a glow, Quadrangle asserted that Hartford owes coverage for the damage claimed under the exception to the exclusion for electric arcing.
The trial court, however, was unpersuaded that the proffered insurance definition of fire was applicable, instead interpreting the contract “in light of common human experience” and employing the “common sense” definition of fire which requires the presence of a flame. Considering both the general guidelines set forth in our case law for the interpretation of insurance contracts and the evidence presented at trial, we are satisfied that the trial court’s determination is not erroneous.
“[A]ny exception in a policy of insurance altering the terms of general liability is to be taken and construed most strongly against the insurer.”
Unkelsbee v. Homestead Fire Ins. Co.,
In this instance, the policy’s fire exception to its cause of loss exclusion for damage resulting from electric arcing did not admit of various and competing “reasonable readings.” As the trial court stated, in its common and ordinary usage, “fire” indicates the presence of a flame. Incident reports prepared by the District of Columbia Fire Department and the hotel’s own security personnel, introduced into evidence at trial, are consistent with the trial court’s definition in that they noted the presence of smoke, but nevertheless concluded that no fire had occurred. Hartford also presented expert testimony that the damage to the switchboard was caused solely by electric arcing.
Furthermore, the trial court’s definition of fire gives meaning to both the electric arcing exclusion and to the exception to it that provides compensation for damage resulting from fire. If Quadrangle’s expansive definition of fire were accepted it would be difficult to hypothesize any instance of electric arcing which would not also be deemed a fire and give rise to liability. Indeed, at one point,
II.
The switchboard damaged in this incident was equipped with two safety devices, only one of which functioned as intended. The pringle switch, which malfunctioned, should have opened automatically to cut off the flow of electricity when the arcing reached an intensity of 1,000 amps. The fuses, which did function properly, cut off the flow of electricity when the arcing reached an intensity of 4,000 amps. If the pringle switch had opened, experts for both parties agreed, the damage to the switchboard, although still extensive, would have been less severe, and the amount of time the supply of electricity to the hotel would have been cut off to facilitate repairs would have been reduced. 4
Quadrangle maintains that recovery is not precluded by the cause of loss exclusion for electric arcing because the failure of the pringle switch was a concurrent or subsequent cause of the damage at issue here. Quadrangle bases this argument on the proposition that the sort of proximate cause analysis usually applicable does not control determinations of liability under § B.2. Quadrangle states that the differing language describing the scope of the § B.l and § B.2 exclusions “alters the doctrine of proximate cause” with regard to § B.2. 5 Quadrangle reasons, apparently, that if the language of the § B.l exclusion (not applicable here) has been fashioned to extend its reach to damages caused “indirectly” or to circumstances in which another cause “contributes concurrently or in any sequence to the loss,” it must follow that § B.2, which lacks such expansive language, will reach fewer losses than would normally be excluded as having been proximately caused by a cause of loss specified in § B.2.
Contrary to Quadrangle’s contention, we find that
Unkelsbee’s
articulation of the “usual rule” in this jurisdiction,
In this instance the trial court’s finding that electric arcing proximately caused the claimed damage is clearly sustainable. 6 Although the failure of the pringle switch allowed the arcing to continue longer than it otherwise would have, the pringle switch did not produce the damage independently of the arcing, and did not play a role that would undercut the proposition that arcing proximately caused the damage, as the concept of proximate cause is applied in insurance coverage disputes.
In
Unkelsbee,
an insurance contract case, we recognized that proximate cause is “the efficient cause, the one that necessarily sets the other causes in operation,” distinguishing it from causes that are “merely incidental.”
The question of proximate cause is generally held to be one for the trier of fact. Couch, supra note 7, at § 74.700. We take the trial court’s statement that “the concomitant failure of the pringle switch to close off the flow of electricity
[9]
at 1000 amps, does not obviate the fact that damages resulted from electrical arcking [sic]” to be a determination that the arcing was, under the circumstances of the case, the efficient and dominant cause of the damages at issue. That
The judgment of the trial court is hereby
Affirmed.
Notes
. Quadrangle alleged total losses as a result of the business interruption of $152,623, a portion of which was covered under the terms of a separate insurance policy. Quadrangle made a claim for $38,364 under the policy at issue in this case.
. In contrast, Hartford’s expert testified that although electric arcing may produce the same type of damage that fire does and that fire can follow arcing, the two processes are distinct and cannot occur simultaneously.
.
See Aetna Ins. Co. v. Getchell Steel Treating Co.,
. Quadrangle’s expert estimated that if the prin-gle switch had opened the business interruption would have lasted three to four hours rather than 12 hours.
. The introductory paragraph for § B.l exclusions (which exclusions include, among other things, earth movement, governmental action, nuclear hazard, war and military action) states:
We will not pay for loss or damage caused directly or indirectly by any of the following. Such loss or damage is excluded regardless of any other cause or event that contributes concurrently or in any sequence to the loss.
(Emphasis added.)
In contrast, the introductory paragraph for § B.2 exclusions (which exclusions include, among other things, electric arcing, wear and tear, explosion of steam boilers, and mechanical breakdown) states:
We will not pay for loss or damage caused by or resulting from....
. Specifically, the trial court found:
I am persuaded that when this contract says, damages caused by or resulting from any of the following, that the concomitant failure of the pringle switch to close at 1000 amps, does not obviate the fact that damages resulted from electric arcking [sic].
In that sense, I believe that the defense argument on ... proximate cause is the more compelling and convincing argument.
. Somewhat similar formulations may be found expressed in negligence actions in this jurisdiction.
See, e.g., District of Columbia v. Freeman,
We note, however, that the concept of proximate cause in insurance contract actions is not identical with that concept in tort actions. See Couch on Insurance 2d § 74:705 (1983). While there is some difference of opinion on this point, see 5 John A. and Jean Appleman, Insurance Law and Practice § 3083 (1970), our opinion in Unkelsbee obviously contemplates such a difference.
. A New York case involving electric arcing,
Home Ins. Co. v. American Ins. Co.,
9. The trial court at times referred to the failure of the pringle switch to “close,” apparently in the sense of cutting off the flow of electricity. Technically, however, it is the opening of the switch that interrupts the flow of electricity and stops arcing.
