Hubbell MSH Recovery Ratings And Amperage At Selected KW, Electrical, Example 150 KW at 480V 3F

Marine Products Division

Recovery Ratings And Amperage At Selected KW

KW

INPUT

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100

110

120

125

150

175

200

225

250

275

300

325

350

375

400

450

500

1000

1200

1400

1600

BTU/HR		Gallons Per Hour (GPH) Heated At					Amperage Rating At Various Voltages
		Various Temperature Rises
RATING	60 °F Δ	80 °F Δ	100 °F Δ	120 °F Δ	140 °F Δ	208V 3F		240V 3F	380V 3F	440V 3F	480V 3F
51,195	103	77	62	51	44	42		36	23	21	18
68,260	137	103	82	68	59	56		48	30	28	24
85,325	171	128	103	85	73	69		60	38	35	30
102,390	205	154	123	103	88	83		72	46	42	36
119,455	239	179	144	120	103	97		84	53	49	42
136,520	273	205	164	137	117	111		96	61	56	48
153,585	308	231	185	154	132	125		108	68	63	54
170,650	342	256	205	171	146	139		120	76	70	60
187,715	376	282	226	188	161	153		132	84	77	66
204,780	410	308	246	205	176	167		145	91	84	72
221,845	444	333	267	222	190	181		157	99	91	78
238,910	478	359	287	239	205	195		169	106	97	84
255,975	513	384	308	256	220	208		181	114	104	90
273,040	547	410	328	273	234	222		193	122	111	96
290,105	581	436	349	290	249	236		205	129	118	102
307,170	615	461	369	308	264	250		217	137	125	108
324,235	649	487	390	325	278	264		229	145	132	114
341,300	683	513	410	342	293	278		241	152	139	120
375,430	752	564	451	376	322	306		265	167	153	132
409,560	820	615	492	410	351	333		289	183	167	145
426,625	854	641	513	427	366	347		301	190	174	151
511,950	1025	769	615	513	439	417		361	228	209	181
597,275	1196	897	718	598	513	486		421	266	244	211
682,600	1367	1025	820	683	586	556		482	304	279	241
767,925	1538	1153	923	769	659	625		542	342	313	271
853,250	1708	1281	1025	854	732	695		602	380	348	301
938,575	1879	1409	1128	940	805	764		662	418	383	331
1,023,900	2050	1538	1230	1025	879	834		723	456	418	361
1,109,225	2221	1666	1333	1110	952	903		783	494	453	391
1,194,550	2392	1794	1435	1196	1025	973		843	532	487	421
1,279,875	2563	1922	1538	1281	1098	1042		903	570	522	452
1,365,200	2733	2050	1640	1367	1171	1112		963	608	557	482
1,535,850	3075	2306	1845	1538	1318	1251		1084	685	627	542
1,706,500	3417	2563	2050	1708	1464	1390		1204	761	696	602
3,412,000	6833	5125	4100	3417	2929	2779		2408	1521	1393	1204
4,094,400	8200	6150	4920	4100	3514	3335		2890	1825	1671	1445
4,776,800	9567	7175	5740	4783	4100	3891		3372	2130	1950	1686
5,459,200	10933	8200	6560	5467	4686	4446		3854	2434	2229	1927

Notes: The KW selections above are shown for convenience. A full selection of KW ratings from 1 to 1600 KW is available by entering the desired KW into the model number. For alternate voltages including 415, 575 and 600 volt, please consult factory.

Electrical

KW  x  1000  ÷  1.73  =  Amps 3 Φ Volts

KW  x  1000  =  Amps 1 Φ Volts

6

Example: 150 KW at 480V 3F

150  x  1000  ÷  1.73  =  180 Total Amp Draw 480

180 ÷ 48 Amps max circuit rating = 3.75 Round up the number of circuits to 4

Note: Each branch circuit is rated at a maximum of 48 Amps and each circuit is typically operated as an independent temperature step.