I use something similar, same idea, just less outlets.
Tripp Lite Metered PDU, 30A, 18 Outlets (16 C13 & 2 C19), 208/240V, L6-30P, 12 ft. Cord, 2U Rack-Mount Power, TAA (PDUMH30HV) Black https://www.amazon.com/dp/B0053YIUPK/ref=cm_sw_r_apan_glt_i_A2M74J5HZQADG96NF48T
No complaints here.
So I live in the US. So our standard wall plugs are 110 V 15 AMP.
I had a 240 V 50 Amp plug put in the garage.
I put the following PDU in to manage the distribute the power.
Tripp Lite Metered PDU, 30A, 18 Outlets (16 C13 & 2 C19), 208/240V, L6-30P, 12 ft. Cord, 2U Rack-Mount Power, TAA (PDUMH30HV) Black https://www.amazon.com/dp/B0053YIUPK/ref=cm_sw_r_apan_glt_fabc_6H629QVEJ9BN9RYFDEEX?_encoding=UTF8&psc=1
I use a PDU with a switch/breaker:
It looks like a good and cheap solution but will it work with large wires from a PDU like this
https://www.amazon.com/gp/product/B0053YIUPK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I don't know anything about electrify but I have a handyman who could do it eventually.
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and 4 evga 1300 watt psu's. will that work?
Yea I'm now looking more at this one
Tripp Lite Metered PDU, 30A, 18 Outlets (16 C13 & 2 C19), 208/240V, L6-30P, 12 ft. Cord, 2U Rack-Mount Power, TAA (PDUMH30HV) Black https://www.amazon.com/dp/B0053YIUPK/ref=cm_sw_r_apan_glt_fabc_DAWXG1E54AKB45ZAJCZM
Or this one
Tripp Lite Basic PDU, 30A, 20 Outlets (16 C13 & 4 C19), 200/208/240V, L6-30P Input, 15' Cord, 1U Rack-Mount Power, 5 Year Warranty (PDU1230) https://www.amazon.com/dp/B0007YG85A/ref=cm_sw_r_apan_glt_fabc_8215Q0RBBA3Z6EQ98T2S?psc=1
There may be cheaper ones but I prefer it sooner than later and I like the idea of it being metered.
Plugs: https://en.wikipedia.org/wiki/NEMA_connector#/media/File:NEMA_simplified_pins.svg
See the wikipedia page on it. Your dryer might be listed there. I had electrician install a L6-30 receptacle and a 240(220) / 30 amp breaker.
Then I got a unit like this: https://www.amazon.com/gp/product/B0053YIUPK/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
you can do a 15 amp, 20 amp version though also as its cheaper, just stay 240v