Question about QMark MUH-35 Heater

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MUH108 I have a MUH108, single phase heater. Need to confirm the wire & breaker size? The PDF says a 4awg wire, but only 48 amps? That seems awful big on the wire in relationship to the breaker? Please help!

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4awg is about the size of battery jumper cable. or 240v multi-strend cable. and 48A is big. double 40A brakers.
the heater is 208v 3-phase 34,000BTU
it is call out to use the 240 comercial wiring.

Posted on Dec 02, 2008

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