Absolutely not. Especially with these 100-120VAC input regulated switching power supplies with trim pots to adjust the output 0.5V either way, vented housings, 5-pole terminal blocks for AC in, chassis ground and DC out. You pick the 5A at 5VDC unit at 3-7/8" x 4" x 1-3/8" or the 8A at 5VDC at 5" x 3-7/8" x 1-1/2". Both have 3/32" mounting holes and are CE listed.