Mrbeing123
New Member
Could someone please tell me if I am correct, or please correct me if I'm wrong.
-3.5 ton Heat Pump Package unit
-1 10kw heat strip
-100 amp appliance disconnect next to unit
The unit needs two feeds off the disconnect.
-1 22.2A(MCA: 26.2/MOP: 40) for compressor and air handler portion
-1 10kw(MCA: 52/MOP: 60) for the heat kit
The compressor and handler needs #10 with MOP 40
However, for the heat strip, since it is for the most part a constant load,
the wire size for the whip should account for the 80% ampacity(210.19(A)(1)).
The 10kw element calculates to ~41.7A. And which 41.7 * 1.25 = 52(same as MCA)
I just wanted to verify what I believe, the heat kits whip should be a 8/2 whip of 90c Cu correct?
also, the EGC should be #8 as well right?
Would this normally be done in one conduit whip? Using Liquidtight, the LFNC-B fill table shows 3/4 sufficient for up to 6 #8 conductors.
Thanks for any help provided
-3.5 ton Heat Pump Package unit
-1 10kw heat strip
-100 amp appliance disconnect next to unit
The unit needs two feeds off the disconnect.
-1 22.2A(MCA: 26.2/MOP: 40) for compressor and air handler portion
-1 10kw(MCA: 52/MOP: 60) for the heat kit
The compressor and handler needs #10 with MOP 40
However, for the heat strip, since it is for the most part a constant load,
the wire size for the whip should account for the 80% ampacity(210.19(A)(1)).
The 10kw element calculates to ~41.7A. And which 41.7 * 1.25 = 52(same as MCA)
I just wanted to verify what I believe, the heat kits whip should be a 8/2 whip of 90c Cu correct?
also, the EGC should be #8 as well right?
Would this normally be done in one conduit whip? Using Liquidtight, the LFNC-B fill table shows 3/4 sufficient for up to 6 #8 conductors.
Thanks for any help provided